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User-Agent Classifier
x402
User-Agent Classifier is a paid API for AI agents from useragent.openverbs.com, paid per call via x402, $0.002/call, status unknown (last checked 2026-09-14).
Classifies a User-Agent header string to identify the browser, OS, device type, or bot behind an HTTP request
Price / call$0.002
Success—
StatusUnknown
How this service works
Classify a User-Agent by device form factor and return convenience booleans (isBot, isMobile, isTablet, isDesktop, isTouchCapable) for routing decisions.
Output
Returns a structured classification of the submitted User-Agent string, including browser name and version, operating system, device type (mobile/desktop/tablet), and whether the agent is a bot or human client.
Example use cases
Bot vs. human traffic detection
“I need to know if this user agent is from a real browser or a bot: 'Googlebot/2.1 (+http://www.google.com/bot.html)' — can you classify it for me?”
Mobile vs. desktop segmentation
“Can you tell me whether this user agent is coming from a mobile or desktop device? Here's the string: 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/114.0.0.0 Safari/537.36'”
Browser compatibility logging
“For my analytics pipeline, classify this user agent and extract the browser name and version: 'Mozilla/5.0 (Macintosh; Intel Mac OS X 13_4) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/16.5 Safari/605.1.15'”
Technical details
Endpoint
POSThttps://useragent.openverbs.com/v1/classifyWhen to prefer
Use this endpoint when you need real-time, per-request classification of User-Agent strings — ideal for server-side analytics, access control, bot detection, and device-specific routing. Prefer it over regex-based libraries when you want a hosted, maintained classification service that handles edge cases and evolving user agent formats without managing local databases.
Side effects
- Missing or empty 'ua' field returns a validation error
- Malformed or unrecognized user-agent strings may return low-confidence or unknown classifications
- Network errors or service unavailability return non-2xx HTTP responses
- Incorrect bodyType specification may cause request parsing failures
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object |
Tags
x402
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